The Russian State Commission on Mineral Reserves (GKZ) approved the results of a supplementary exploration carried out by North-Western Phosphorous Company in 2008–2011 at the Oleniy Ruchey deposit. Total reserves of apatite and nepheline ores (В+С1+С2) increased 5% as a result of the revaluation. The most significant upward revision was recorded in the open pit operations, where ore reserves were increased 75%. That will considerably extend the life of the open pit (the first stage of the Oleniy Ruchey mine), which now can be developed for at least 14 years.
| Open pit mining | Ore, ‘000 t | Р2О5, % | Р2О5, ‘000 t |
| В | 7,369 | 18.16% | 1,339 |
| С1 | 22,566 | 13.36% | 3,014 |
| B+C1 | 29,935 | 14.54% | 4,353 |
| С2 | 1,063 | 14.12% | 150 |
| В+С1+С2 | 30,998 | 14.53% | 4,503 |
| Underground mining | Ore, ‘000 t | Р2О5, % | Р2О5, ‘000 t |
| В | 60,733 | 16.89% | 10,257 |
| С1 | 182,632 | 16.23% | 29,642 |
| B+C1 | 243,365 | 16.39% | 39,899 |
| С2 | 129,163 | 14.95% | 19,307 |
| В+С1+С2 | 372,528 | 15.89% | 59,206 |
| Total | Ore, ‘000 t | Р2О5, % | Р2О5, ‘000 t |
| В | 68,102 | 17.03% | 11,596 |
| С1 | 205,198 | 15.91% | 32,656 |
| B+C1 | 273,300 | 16.19% | 44,252 |
| С2 | 130,226 | 14.94% | 19,457 |
| В+С1+С2 | 403,526 | 15.79% | 63,709 |